CVE-2026-6765
published 2026-04-21CVE-2026-6765: Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
PriorityP427medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.21%
12.1th percentile
Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 150 | Firefox 150 |
| mozilla | firefox | < 140.10.0 | 140.10.0 |
| mozilla | firefox | < 150.0 | 150.0 |
| mozilla | firefox | — | — |
| mozilla | firefox_esr | < Firefox ESR 140.10 | Firefox ESR 140.10 |
| mozilla | thunderbird | < Thunderbird 150 | Thunderbird 150 |
| mozilla | thunderbird | < Thunderbird 140.10 | Thunderbird 140.10 |
| mozilla | thunderbird | < 140.10.0 | 140.10.0 |
| rhel10 | firefox-flatpak | — | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
vendor_redhat5.3MEDIUM
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VulDB
Mozilla Firefox up to 149 Form Autofill information disclosure (Nessus ID 310350)
vuldb·2026-04-26·CVSS 5.3
CVE-2026-6765 [MEDIUM] Mozilla Firefox up to 149 Form Autofill information disclosure (Nessus ID 310350)
A vulnerability was found in Mozilla Firefox up to 149 and classified as problematic. This vulnerability affects unknown code of the component Form Autofill. Such manipulation leads to information disclosure.
This vulnerability is referenced as CVE-2026-6765. It is possible to launch the attack remotely. No exploit is available.
It is suggested to upgrade the affected component.
GHSA
GHSA-v5vh-6mhh-h6gc: Information disclosure in the Form Autofill component
ghsa_unreviewed·2026-04-21
CVE-2026-6765 [MEDIUM] CWE-359 GHSA-v5vh-6mhh-h6gc: Information disclosure in the Form Autofill component
Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.
Red Hat
firefox: Information disclosure in the Form Autofill component
vendor_redhat·2026-04-21·CVSS 5.3
CVE-2026-6765 [MEDIUM] CWE-359 firefox: Information disclosure in the Form Autofill component
firefox: Information disclosure in the Form Autofill component
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Information disclosure in the Form Autofill component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: firefox (Red Hat Enterprise Linux 7) - Affected
Package: firefox (Red Hat Enterprise Linux 8) - Affected
Package: firefox (Red Hat Enterprise Linux 9) - Affected
Mozilla
Mozilla Foundation Security Advisory 2026-33: CVE-2026-6765
vendor_mozilla·CVSS 5.3
CVE-2026-6765 [MEDIUM] Mozilla Foundation Security Advisory 2026-33: CVE-2026-6765
Mozilla Foundation Security Advisory 2026-33
CVE: CVE-2026-6765
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 150
Mozilla
Mozilla Foundation Security Advisory 2026-30: CVE-2026-6765
vendor_mozilla·CVSS 5.3
CVE-2026-6765 [MEDIUM] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6765
Mozilla Foundation Security Advisory 2026-30
CVE: CVE-2026-6765
Product: Firefox
Impact: high
Fixed in: Firefox 150
Mozilla
Mozilla Foundation Security Advisory 2026-32: CVE-2026-6765
vendor_mozilla·CVSS 5.3
CVE-2026-6765 [MEDIUM] Mozilla Foundation Security Advisory 2026-32: CVE-2026-6765
Mozilla Foundation Security Advisory 2026-32
CVE: CVE-2026-6765
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.10
Mozilla
Mozilla Foundation Security Advisory 2026-34: CVE-2026-6765
vendor_mozilla·CVSS 5.3
CVE-2026-6765 [MEDIUM] Mozilla Foundation Security Advisory 2026-34: CVE-2026-6765
Mozilla Foundation Security Advisory 2026-34
CVE: CVE-2026-6765
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.10
No detection rules found.
No public exploits indexed.
2026-04-21
Published